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(No Mode'l.)

, 4 sheets-heet 2. E. GURNEY. STEAM 0R HOT WATER BILER.

Patented 0401;I 30, 1894.

WNEESEE:

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INVENTRI (No Model.) 4 Sheets-Sheet v3.v

E.l GURNEY. STEAM 0R HOT. WATER BOILER.

Patented Oct. 30, 1894:.

WTNEEEEET NVENTUH (No Model.) 4 sheetssheet 4; E. GURNEY. STEAM 0R HOT WATER BOILER.

Patented'Oct. 30,1894.

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EDWARDGURNEY, OE TORONTO, CANADA. -l

STEAM O R 'HOT-WATER BOILER.

SPECIFICATION forming part of Letters Patent No. 528,325, dated October 30, 1894. Application filed October 24, 189,3. Serial No. 489.002- (No model.)

[b all whom it may concern: Beit known that I, EDWARD GURNEY, a sub- Ject of the Queen of Great Britain, and a resident of Toronto, in the Province of Ontario,

Canada, have invented certain new and useful Improvements in Steam or Hot-Water goilers, of which the following is a specifica- 1on. v

This invention relates to boilers or heaters, principally for heating purposes, and mainly for steam heating, although the invention may be applied to systems of hot water heating.

In using the term boiler throughout this specification, it will be understood that I refer to a receptacle in which water is to be heated, either for steam heating or heating by the circulation of hot water. i l

The invention has for its object to provide a boiler of simple construction, which shall present a large area of heat-absorbing surface in contact with the water to be heated; which shall be capable of being readily cleaned; and in which the heat developed by the combustion of the fuel shall be utilized to an economical extent.. To these ends, the invention consists in the improvements which I will now proceed to describe and claim.

Of the accompanying drawings, forming part of this specification: Figure 1 represents a front elevation of a boiler embodying my lnvention. Fig. 2 represents a section on line 2-2 of Fig. l. Fig. Srepresents atop plan view. Fig. 4 represents asection on line 4 -4 of Fig. 3. Fig. 5 represents a perspective vlew of one of the sections ofthe boiler. Fig. 6 represents a section on line 6 6 of Fig. 5. Fig. 7 represents a section similar to 6, the tubes or loops being removed. Figs. 8 and 9 represent transverse sections of one of the tubes or loops, showing dierent forms in which the same may be constructed. Fig. 10 represents a section on line 10-10 of Fig. 4

The same letters of reference indicate the same parts in all the figures.

In carrying outrmy invention, I construct a boiler of two sections a a, each having the general construction shown particularly in Figs. 5, 6 and 7. The inner side or wall of each section is recessed from its lower end considerably more than half-way to its upper end, to form the enlarged chamber a', the lower portion of which constitutes the firespace, andthe upper portion the combustionchamber in which the tubes or loops hereinafter referred to are located. Said inner wall is also recessed at its upper portion, to form an-outlet-passage a2, with which `the stack o funnel b isconnected. f

It will be seen by reference to Figs. 4 and 5, that each section comprises a half-dome, and a half water-leg extending downwardly from said half-dome. 4It'will also be seen that the two sections have reciprocal bearingfaces or seats, the seats of each section bearing upon those of the other; so that, when the sections are assembled, a structure is formed, which comprises a dome'made in two parts 'and provided with a central outlet-passage cfor the products of combustion, and a water-leg extending downwardly from the dome and inclosing a space for the fire and the tubes yor loops hereinafter referred to, which are located above the fire-space and are acted upon by the ascending products of combustion, as indicated in Fig. 2.

Each section has formed upon its inner wall a number of inwardly-projecting nipples or sockets d3, best shown in Fig. 7, said nipples being internally screw-threaded. Into said nipples are screwed the inner ends ot' tubes or loops a", there being a considerable number of said tubes, as shown in Figs. `2 and 5. Each tube is open at its innerv end. and closed at its outer end, and communicates with the water-leg.

I prefer to place a diaphragm a5 in each tube, said diaphragmextending from the inner end of the tube partly to its outer end, and being arranged so that water from the water-leg will flow along the under side of lthe diaphragnito the outer end of the loop,

and then back to the water-leg alongthe upper side of the diaphragm.

Each loop may be provided with a central vertical iiue a6, as shown in Fig. 9, the loop being thus subdivided into two parts, lying side by side, each havinga diaphragm a5.

The tubes are arranged in horizontal rows, as shown in Figs. 2 and 5, and the sections are provided with clean-out openings a, which coincide with the spaces between the hori- ICO zontal rows of. tubes, so that the tubes can be readily cleaned from the front of the boiler.

It will be seen that the tubes are located above 4the fire-space of the boiler, and that the tubes in each row are separated by spaces, the spaces in one row alternating with the tubes of the next row, so that the tubes act as baile-plates to cause the products of combustion to take a tortuous course in passing upwardly.

The sections a c1. are provided with enlargements as, which coincide with the rows of tubes, and form contracted spaces between the tubes at the ends of the rows and the water-leg, so that uniformity of said spaces is secured across the boiler.

,The upper portions of the half-domes are provided with openings a9, which are connected by suitable connections am 0.10 with a horizontal steam receiving header am, through which steam passes from the dome to the radiators. The lower portions of the half water-legs have suitable openings, which are connected by pipes cl3 als with a horizontal header 0.14, which receives the return- Water from the radiators.

It will be seen that the headers 0.12 and a extend across the joints between the sections a a, and therefore serve to hold the sections in contact with each other.

rThe clean-out 4openings a7 above referred to are formed partly in one section, and partly in the other, and below said openings are door-ways n.15, each section having a half doorway, the arrangement being such that, when the sections are assembled, the openings a7 and @15 will coincide.

am represents a door-frame, which is attached to the sections, and extends across the joint between the sections, and is provided with suitable doors a covering said openings. The door-frame. therefore serves to additionally secure the sections a a together.

It will be seen that the sections, constructed as above described, present large areas of heating surface, are readily cleaned, and constitute a very simple and effective boiler.

I do not limit myself to the particular form of the sections and of the loops or tubes here shown, and may vary the same within such limits as may be dictated by skill and j udgment, without departing from the spirit of the invention. For example, the outlet passages a2 maybe dispensed with, and the outlet made from the upper portion of the chamber a through the water-leg, instead of through the dome, although I prefer the construction shown.

I claiml. A boiler, composed of two independent sections havingat their inner sides reciprocal seats or bearing-surfaces, each section comprising a dome portion and a water-leg porl tion, the latter having inwardly-projecting nipples on its inner wall andhorizontal loops or tubes engaged with said nipples and projecting into the space inclosed by the waterleg, the ends or bearing surfaces of the sections and their loops or tubes being in a uniform vertical plane and adapted to abut, and

the said tubes being in rows with the tubes of one row above the spaces between the tubes of the next row, as set forth.

2. A boiler, composed of two independent sections, each including a half-dome, a half water-leg below the dome, and horizontal rows of inwardly-projecting loops or tubes separated by spaces which alternate in each row with the tubes of the next row, whereby the tubes are caused to act as baffle-plates, the water-leg having enlargements in line with the rows of tubes, said enlargements reducing the width of the spaces between the water-leg and the end tubes, and the ends of all the tubes being flush with or in the same vertical plane as the meeting surfaces of the two half-domes and Water-legs and adapted to abut, as set forth.

3. A boiler composed of two independent sections formed to bear on each other and each comprising a dome-portion and a waterleg portion, and horizontal loops or tubes engaged with the inner walls of the water-leg portion and projecting into the fire space inclosed thereby, each loop having a direct connection with said water-leg and provided with an internal partition extending nearly to its end, whereby water from the water-leg will be caused to flow along the lower portion of the tube in the lire space and back through IOC the upper portion of the tube to the waterleg, substantially as described.

In testimony whereof I-have signed my name to this specification,in the presence of two subscribing witnesses, this 14th day of October, A. D. 1893.

EDWARD GURNEY.

Witnesses:

GEORGE BELL, DAVID HENDERSON. 

